Trapezoidal Roof Sheet Forming

What this process looks like

Trapezoidal is the workhorse single-skin roof profile. Coverage differs from coil width — two boards share one rib-pitch family.

SKU / class

TN40 trapezoidal former— high-speed trapezoidal single-skin roof sheet line.

Host structure

40# H-beam frame ·cast-iron stands·25passes · shaft Ø80· rollers 45# · gearbox drive.

Cut / speed

Hydraulic guide-pillar ·stop cut· target35–40 m/min.

Specifications

SKU / class	TN40 trapezoidal former— high-speed trapezoidal single-skin roof sheet line.
Host structure	40# H-beam frame ·cast-iron stands·25passes · shaft Ø80· rollers 45# · gearbox drive.
Cut / speed	Hydraulic guide-pillar ·stop cut· target35–40 m/min.
Hydraulics / power	Main18.5 kW· pump5.5 kW+accumulator· enlarged cylinders · air cool · 380/400 V 50 Hz 3P.
Controls	PLC · fullDeltaelectrics · HMIZH / local / EN· order memory after power loss · blue machine color.
Material	PPGI0.25–0.7 mm· infeed widths1000 / 1250 mm.
Specification A	Infeed 1250 → coverage ~975· overall ~1012 ·6major ribs · H38 · pitch 195.
Specification B	Infeed 1000 → coverage ~780· overall ~812 ·5major ribs · same rib family.
Line auxiliaries	15 T hydraulic decoiler (1250 coil) · 3 m powered table · 12 mflipauto stacker.

Operation steps

15 T hydraulic decoiler

Match decoiler speed to the former. The car, press arm and rail thickness support the 1250 mm coil width at order speed.

Hang the twin specification board

Tag which recipe is running — 1000 or 1250. Coverage 780 vs 975 must be readable beside the first-off panel.

Progressive ribs on cast-iron stands

Wide shot of cast-iron stands and the gearbox train. Keep stands clean so paint-safe forming at order speed does not scuff the coating.

Stop-cut with accumulator hydraulics

Show the strip stopping into the guide-pillar shear. The accumulator and air-cool package are part of the line at this speed class.

Overlap / dry-nest check

Two panels on the table prove the side return seats against the board. The effective-coverage claim stands or falls at the nest.

12 m flip stacker

Flip-style stacker with oversized pneumatic align and dual motors. Match table-to-knife distance so stop-cut lengths land clean.

What's included

This line

High-speed trapezoidal single-skinroof sheet forming (TN40 class): twin 1000/1250 specification, stop-cut line with decoiler + table + flip stacker.

Standard build

Cast-iron stands, 25-pass forming, guide-pillar stop-cut with accumulator, Delta PLC/HMI in ZH/local/EN, and 12 m flip stacker.

Key details

Line speed

Line speed is high, but the knife recipe is stop-cut. Confirm the shear type matches the specification before quoting cycle time.

Note 2

A 1250 mm coil does not mean 1250 mm coverage. show the 975 / 780 boards next to the first-off panel.

FAQ

How is the forming frame built?

40# H-beam frame ·cast-iron stands·25passes · shaft Ø80· rollers 45# · gearbox drive.

How fast does the line run and how is the sheet cut to length?

Hydraulic guide-pillar ·stop cut· target35–40 m/min.

What is the power and hydraulic configuration?

Main18.5 kW· pump5.5 kW+accumulator· enlarged cylinders · air cool · 380/400 V 50 Hz 3P.

What control system does the machine use?

PLC · fullDeltaelectrics · HMIZH / local / EN· order memory after power loss · blue machine color.

What material and thickness range does this line run?

PPGI0.25–0.7 mm· infeed widths1000 / 1250 mm.

What auxiliary equipment comes with the line?

15 T hydraulic decoiler (1250 coil) · 3 m powered table · 12 mflipauto stacker.

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